External things are not the problem. It's your assessment of them. Which you can erase right now. (Hays translation) - Marcus Aurelius

Be not unwilling in what thou doest, neither selfish nor unadvised nor obstinate; let not over-refinement deck out thy thought; be not wordy nor a busybody.

Life is short—the fruit of this life is a good character and acts for the common good.

Then what should we work for? Only this: proper understanding; unselfish action; truthful speech. A resolve to accept whatever happens as necessary and familiar, flowing like water from that same source and spring. (Hays translation)